public override IGlPlatformSurfaceRenderingSession BeginDraw()
{
var contextLock = _egl.PrimaryEglContext.EnsureCurrent();
IUnknown texture = null;
EglSurface surface = null;
IDisposable transaction = null;
var success = false;
try
{
if (_window?.Item == null)
{
throw new ObjectDisposedException(GetType().FullName);
}
var size = _info.Size;
transaction = _window.Item.BeginTransaction();
_window.Item.ResizeIfNeeded(size);
texture = _window.Item.BeginDrawToTexture(out var offset);
surface = ((AngleWin32EglDisplay)_egl.Display).WrapDirect3D11Texture(_egl,
texture.GetNativeIntPtr(),
offset.X, offset.Y, size.Width, size.Height);
var res = base.BeginDraw(surface, _info, () =>
{
surface?.Dispose();
texture?.Dispose();
_window.Item.EndDraw();
transaction?.Dispose();
contextLock?.Dispose();
}, true);
success = true;
return(res);
}
finally
{
if (!success)
{
surface?.Dispose();
texture?.Dispose();
transaction?.Dispose();
contextLock.Dispose();
}
}
}
